Ex-league star says cocaine rife after GFs

Former rugby league international Jason Donnelly says "cocaine is everywhere after grand finals".

Cronulla fullback Ben Barba's career is once again at a crossroads, with the former Dally M Medallist released by the Sharks this week after testing positive to cocaine four days after the Sharks' NRL grand final triumph over Melbourne.

Donnelly, a member of St George's back-to-back grand final squads in 1992-93, says, speaking from experience, cocaine tends to be rife around celebrations of the game's biggest day.

"Cocaine is everywhere after grand finals," he told AAP.

"I'm not casting judgement ... it's just reality.

"Why do you think the NRL tests for recreational drugs?"

Donnelly's claims might ruffle feathers but he insists little has changed in the professional era since his playing days of more than 20 years ago.

He says some footballers are happy to run the risk of being tested while on a high - natural or otherwise - after completing a gruelling season in the ultimate fashion.

"Society is society and back when I was playing you knew it would get out of your system in 48 hours," he said.

"That's what all the breaking your back for all year is: to have just maybe one night where you'd party all night and let your hair down."

A former New Zealand junior decathlon champion who once trained under the legendary Daley Thompson in Britain, Donnelly is adamant he never engaged in recreational drugs - but he saw it first hand.

"I was too focused, obsessed, growing up on being an athlete. I wanted to go to the Olympics," he said.

"The first time I was involved in a grand final, I was a bit overawed. I was only 21 and had come over from New Zealand.

"So then after the grand final, to see all the cocaine use was a bit of a surprise."

Donnelly, a nuggety powerhouse and one of coach Brian Smith's trailblazing metre-eating wingers, also cast doubt on the consistency of drug testing.

"There's no way that drug testing is random," he said.

"I was targeted because of my size to height but never failed any of the six or so tests I ever had. But I know teammates who were never tested.

"Ben Barba's 12-match suspension is what he deserves but I think it (party drug use) is rife."

Cronulla stars made no secret on social media of the fact their premiership party lasted for days, posting numerous celebratory images but Sharks chairman Lyle Gorman said he'd been assured by the NRL that no other players tested positive to illicit drugs.